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There where many inventions in the 1920s as it was a time of change but 2 big ones are the car and insulin. I also think that crayobs were invented in the 1920s.
Likely the big invention between 1925 and 1935 was the television. It was first demonstrated to scientists in 1929 and to the public in 1939.
During the 1920s, the Republican presidents acted to support big business.
the elterscellter
Bert and Ernie
Big Town Czar - 1939 is rated/received certificates of: Australia:G
The Big Sleep was created in 1939.
steel, cool, oil, and railroads
Helped big business. (apex)
a big one
The business created by Henry ford in the 1920s.
It was in 1920s, possibly in 1927.